ACTA AGRICULTURAE BOREALI-SINICA ›› 2021, Vol. 36 ›› Issue (2): 162-168. doi: 10.7668/hbnxb.20191584

Special Issue: Soil fertilizer

• Resources & Environment·Plant Protection • Previous Articles     Next Articles

Spatiotemporal Variation of Zn Speciation and Its Effect on Available Zn in Cinnamon Soil under Long-term Fertilization

YANG Zhenxing, ZHOU Huaiping, XIE Wenyan, LIU Zhiping   

  1. College of Resources and Environment, Shanxi Agricultural University, Taiyuan 030031, China
  • Received:2020-12-22 Published:2021-04-28

Abstract: In order to investigate the variation of Zn speciation in cinnamon soil under different long-term fertilization and its effect on available Zn, the cinnamon soil in Shanxi Province was taken as the research object. The change process of soil available Zn and the temporal and spatial variation of different forms of Zn under different fertilization conditions were studied by classifying and measuring 9 soil samples in a continuous 27-year long-term fertilizer localization experiment. The relationship between different forms of Zn and available Zn was analyzed. The results showed that, except N2P2, the soil available Zn content had no significant change compared with the beginning of the experiment. After 27 years of continuous fertilization, the soil available Zn content ranged from 0.72 to 0.84 mg/kg.The application of organic fertilizer significantly increased the soil available Zn content (P<0.05), and the annual increase rates of soil available Zn content in N2P1M1, N3P2M3 and N4P2M2 treatments were 0.057, 0.151,0.074 mg/(kg·a), respectively.The soil available Zn reached 7.37 mg/kg with high amount of organic fertilizer M6 treatment, far exceeding the soil nutrient grading standard in China.Correlation analysis and path analysis showed that the reducible Zn in soil was the main source of available Zn in cinnamon soil, and the significant positive correlation between water-soluble Zn, weakly acid soluble Zn and available Zn was caused by indirect effect.Therefore, promoting the conversion of Zn to water-soluble Zn, weakly acid soluble Zn and reducible Zn can increase the content of available Zn in soil and promote the efficient utilization of Zn.

Key words: Cinnamon soil, Available Zn, Zn form, Grading determination, Correlation analysis, Path analysis

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Cite this article

YANG Zhenxing, ZHOU Huaiping, XIE Wenyan, LIU Zhiping. Spatiotemporal Variation of Zn Speciation and Its Effect on Available Zn in Cinnamon Soil under Long-term Fertilization[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(2): 162-168. doi: 10.7668/hbnxb.20191584.

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